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100850 (1998 HV31)
Classification: Main-belt Asteroid          SPK-ID: 2100850
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1700869700828454 6.8811e-08  
a 2.316228666050848 8.7496e-09 au
q 1.922268350223228 1.6075e-07 au
i 24.94802093256107 7.3436e-06 deg
node 220.1397462521962 1.073e-05 deg
peri 348.9777861269694 1.7995e-05 deg
M 159.6515389542544 1.461e-05 deg
tp 2458629.493326896026
(2019-May-25.99332690)
5.0508e-05 TDB
period 1287.569187643917
3.53
7.2957e-06
1.997e-08
d
yr
n .2795966255287243 1.5843e-09 deg/d
Q 2.710188981878467 1.0238e-08 au
  Orbit Determination Parameters
   # obs. used (total)      776  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-04-22  
   last obs. used      2020-12-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55083  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:26:22  

Additional Information
 Earth MOID = .917568 au 
 Jupiter MOID = 2.27365 au 
 T_jup = 3.439 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457507.5 (2016-Apr-29.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696893561730705 6.8938e-08  
q 1.923504958084788 1.6098e-07 au
tp 2457341.003614223386
(2015-Nov-14.50361422)
4.7246e-05 TDB
node 220.1767853137695 1.0728e-05 deg
peri 348.905017516994 1.7984e-05 deg
i 24.95073944969574 7.3441e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      776  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-04-22  
   last obs. used      2020-12-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55083  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:26:22  

Additional Information
 Jupiter MOID = 2.27365 au 
 T_jup = 3.439 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.752472611671816E-15 -1.108670630749667E-14 -1.515628059314868E-12 3.455476868518195E-14 -4.963506021250042E-13 1.678220413509432E-15
q -1.108670630749667E-14 2.591475598890598E-14 3.645837425717256E-12 -8.022020541727465E-14 1.188265440058451E-12 -3.942898092503671E-15
tp -1.515628059314868E-12 3.645837425717256E-12 2.232157933912056E-9 -1.954655822000188E-11 6.971937836836799E-10 2.262760350803951E-12
node 3.455476868518195E-14 -8.022020541727465E-14 -1.954655822000188E-11 1.150920631357314E-10 -1.097764751581099E-10 -3.766185754180898E-11
peri -4.963506021250042E-13 1.188265440058451E-12 6.971937836836799E-10 -1.097764751581099E-10 3.234307111297101E-10 3.487609166706159E-11
i 1.678220413509432E-15 -3.942898092503671E-15 2.262760350803951E-12 -3.766185754180898E-11 3.487609166706159E-11 5.393531573852397E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.71   n/a E2021B55  
rotation period rot_per 5.45538 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

100850 (1998 HV31)          Discovered 1998-Apr-22 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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